Source note · Calls-per-second limits on SIP trunks and dialers
When a Bandwidth call concurrency limit is reached, the call receives either SIP 503 Service Unavailable or 486 Busy Here.
Checked 2026-10-02
- Vendor
- Bandwidth
- Product
- SIP Trunking
- Subsystem
- concurrent calls
- Deployment
- multi-tenant
- Region
- us
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Outbound calling integration guide — Bandwidth · tier 2 current vendor documentation · Call concurrency section
Cite this note
APA
WarmTransfer. (2026, October 2). Calls-per-second limits on SIP trunks and dialers: source note sip-trunk-cps-limits-bandwidth-503-or-486. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-cps-limits-bandwidth-503-or-486
BibTeX
@misc{warmtransfer-claim-sip-trunk-cps-limits-bandwidth-503-or-486,
title = {Calls-per-second limits on SIP trunks and dialers: source note sip-trunk-cps-limits-bandwidth-503-or-486},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-cps-limits-bandwidth-503-or-486},
note = {Source note sip-trunk-cps-limits-bandwidth-503-or-486, checked 2026-10-02}
}